49ers sign Lewis after WR Jacobs sustains torn ACL

Wide receiver Lance Lewis, 25, who was waived by the Cowboys in May, will sign with the 49ers, according to his Twitter account.

Lewis will assume the roster spot of wideout Chuck Jacobs, who tore his ACL on a kickoff return in a 23-3 loss to the Ravens on Thursday, Jim Harbaugh said today. The 49ers waived/injured Jacobs, who spent last season on their practice squad.

Lewis (6-2, 207), who played at East Carolina, signed with Washington as an undrafted free agent in 2012 but was released before the season. Last year, he began the season on Washington’s practice squad, was activated for three games and waived on Dec. 18. He finished the season on Dallas’ practice squad before he was waived in the spring.

At East Carolina, Lewis, who attended two junior colleges, had 89 catches, 1,116 yards and 14 touchdowns as a junior in 2010. He missed three games because of injury as a senior and had 60 catches, 600 yards and eight touchdowns.